From: Jiri Olsa <jolsa@kernel.org>
To: Steven Rostedt <rostedt@kernel.org>,
Florent Revest <revest@google.com>,
Mark Rutland <mark.rutland@arm.com>
Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-trace-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Menglong Dong <menglong8.dong@gmail.com>,
Song Liu <song@kernel.org>
Subject: [PATCHv3 bpf-next 7/8] ftrace: Factor ftrace_ops ops_func interface
Date: Thu, 20 Nov 2025 22:24:01 +0100 [thread overview]
Message-ID: <20251120212402.466524-8-jolsa@kernel.org> (raw)
In-Reply-To: <20251120212402.466524-1-jolsa@kernel.org>
We are going to remove "ftrace_ops->private == bpf_trampoline" setup
in following changes.
Adding ip argument to ftrace_ops_func_t callback function, so we can
use it to look up the trampoline.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
include/linux/ftrace.h | 2 +-
kernel/bpf/trampoline.c | 3 ++-
kernel/trace/ftrace.c | 6 +++---
3 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 4e2c0ed769fc..5aa37dec0081 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -402,7 +402,7 @@ enum ftrace_ops_cmd {
* Negative on failure. The return value is dependent on the
* callback.
*/
-typedef int (*ftrace_ops_func_t)(struct ftrace_ops *op, enum ftrace_ops_cmd cmd);
+typedef int (*ftrace_ops_func_t)(struct ftrace_ops *op, unsigned long ip, enum ftrace_ops_cmd cmd);
#ifdef CONFIG_DYNAMIC_FTRACE
diff --git a/kernel/bpf/trampoline.c b/kernel/bpf/trampoline.c
index f33693061c2e..d8762f7990ed 100644
--- a/kernel/bpf/trampoline.c
+++ b/kernel/bpf/trampoline.c
@@ -33,7 +33,8 @@ static DEFINE_MUTEX(trampoline_mutex);
#ifdef CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
static int bpf_trampoline_update(struct bpf_trampoline *tr, bool lock_direct_mutex);
-static int bpf_tramp_ftrace_ops_func(struct ftrace_ops *ops, enum ftrace_ops_cmd cmd)
+static int bpf_tramp_ftrace_ops_func(struct ftrace_ops *ops, unsigned long ip,
+ enum ftrace_ops_cmd cmd)
{
struct bpf_trampoline *tr = ops->private;
int ret = 0;
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 5243aefb6096..b0e4d7a5d47c 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2049,7 +2049,7 @@ static int __ftrace_hash_update_ipmodify(struct ftrace_ops *ops,
*/
if (!ops->ops_func)
return -EBUSY;
- ret = ops->ops_func(ops, FTRACE_OPS_CMD_ENABLE_SHARE_IPMODIFY_SELF);
+ ret = ops->ops_func(ops, rec->ip, FTRACE_OPS_CMD_ENABLE_SHARE_IPMODIFY_SELF);
if (ret)
return ret;
} else if (is_ipmodify) {
@@ -8976,7 +8976,7 @@ static int prepare_direct_functions_for_ipmodify(struct ftrace_ops *ops)
if (!op->ops_func)
return -EBUSY;
- ret = op->ops_func(op, FTRACE_OPS_CMD_ENABLE_SHARE_IPMODIFY_PEER);
+ ret = op->ops_func(op, ip, FTRACE_OPS_CMD_ENABLE_SHARE_IPMODIFY_PEER);
if (ret)
return ret;
}
@@ -9023,7 +9023,7 @@ static void cleanup_direct_functions_after_ipmodify(struct ftrace_ops *ops)
/* The cleanup is optional, ignore any errors */
if (found_op && op->ops_func)
- op->ops_func(op, FTRACE_OPS_CMD_DISABLE_SHARE_IPMODIFY_PEER);
+ op->ops_func(op, ip, FTRACE_OPS_CMD_DISABLE_SHARE_IPMODIFY_PEER);
}
}
mutex_unlock(&direct_mutex);
--
2.51.1
next prev parent reply other threads:[~2025-11-20 21:25 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-20 21:23 [PATCHv3 bpf-next 0/8] ftrace,bpf: Use single direct ops for bpf trampolines Jiri Olsa
2025-11-20 21:23 ` [PATCHv3 bpf-next 1/8] ftrace: Make alloc_and_copy_ftrace_hash direct friendly Jiri Olsa
2025-11-20 21:23 ` [PATCHv3 bpf-next 2/8] ftrace: Export some of hash related functions Jiri Olsa
2025-11-20 21:23 ` [PATCHv3 bpf-next 3/8] ftrace: Add update_ftrace_direct_add function Jiri Olsa
2025-11-20 21:23 ` [PATCHv3 bpf-next 4/8] ftrace: Add update_ftrace_direct_del function Jiri Olsa
2025-11-20 22:23 ` bot+bpf-ci
2025-11-21 13:52 ` Jiri Olsa
2025-11-20 21:23 ` [PATCHv3 bpf-next 5/8] ftrace: Add update_ftrace_direct_mod function Jiri Olsa
2025-11-20 22:23 ` bot+bpf-ci
2025-11-21 13:53 ` Jiri Olsa
2025-11-20 21:24 ` [PATCHv3 bpf-next 6/8] bpf: Add trampoline ip hash table Jiri Olsa
2025-11-20 21:24 ` Jiri Olsa [this message]
2025-11-20 21:24 ` [PATCHv3 bpf-next 8/8] bpf, x86: Use single ftrace_ops for direct calls Jiri Olsa
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